<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <title>Title</title>
    <meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
    <style type="text/css">
        .box{
            width:0px;
            height:0px;
            background-color: pink;
            /*display: none;*/
        }
    </style>
    <script type="text/javascript" src="jquery-3.1.1.min.js"></script>
    <script type="text/javascript">
        $(function(){
            $("button").click(function(){
                $('.box').stop().animate({width:100,height:100});
            })
        })
    </script>
</head>
<body>
<button type="button" value="button">按钮</button>
<div class="box"></div>
</body>
</html>